/*

 * Licensed to the Apache Software Foundation (ASF) under one

 * or more contributor license agreements.  See the NOTICE file

 * distributed with this work for additional information

 * regarding copyright ownership.  The ASF licenses this file

 * to you under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in compliance

 * with the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.bff.gaia.unified.sdk.extensions.sql.meta.provider;



import com.bff.gaia.unified.sdk.extensions.sql.UnifiedSqlUdf;

import com.bff.gaia.unified.sdk.transforms.Combine;

import com.bff.gaia.unified.sdk.transforms.SerializableFunction;



import java.util.Collections;

import java.util.Map;



/** Provider for UDF and UDAF. */

public interface UdfUdafProvider {

  /** For UDFs implement {@link UnifiedSqlUdf}. */

  default Map<String, Class<? extends UnifiedSqlUdf>> getUnifiedSqlUdfs() {

    return Collections.emptyMap();

  }



  /** For UDFs implement {@link SerializableFunction}. */

  default Map<String, SerializableFunction<?, ?>> getSerializableFunctionUdfs() {

    return Collections.emptyMap();

  }



  default Map<String, Combine.CombineFn> getUdafs() {

    return Collections.emptyMap();

  }

}